Reagent cartridge



FIG. 1 is a perspective view of the reagent cartridge showing the right side front and top of the reagent cartridge;

FIG. 2 is a left view of the reagent cartridge shown in FIG. 1;

FIG. 3 is a rear view of the reagent cartridge shown in FIG. 1; and,

FIG. 4 is a bottom view of the reagent cartridge shown in FIG. 1. 

I claim the ornamental design for reagent cartridge, as shown. 